Improve word choice in encrypting_save_games

Improve word choice in encrypting_save_games. Fix subjunctive mood and punctuation.

Notes:
"**everyday**" is the correct spelling of the  _adjective_; 
"**every day**" is an  _adverbial phrase_: 

(_what kind of_ ... ?)
"That is an  **everyday** occurrence." / 
"That happens  **every day**."
(_when_?)

Data types ~ parts of speech

tutorials/io/encrypting_save_games.rst

@@ -11,22 +11,22 @@ oligarchy runs the world and forces us to consume in order to keep the
 gears of this rotten society on track. As such, the biggest market for
 video game consumption today is the mobile one. It is a market of poor
 souls forced to compulsively consume digital content in order to forget
-the misery of their every day life, commute, or just any other brief
+the misery of their everyday life, commute, or just any other brief
 free moment they have that they are not using to produce goods or
 services for the ruling class. These individuals need to keep focusing
-on their video games (because not doing so will produce them a
+on their video games (because not doing so will fill them with
 tremendous existential angst), so they go as far as spending money on
 them to extend their experience, and their preferred way of doing so is
 through in-app purchases and virtual currency.
 
-But, imagine if someone was to find a way to edit the saved games and
-assign the items and currency without effort? This would be terrible,
-because it would help players consume the content much faster, and as
-such run out of it sooner than expected. If this happens they will have
+But what if someone were to find a way to edit the saved games and
+assign the items and currency without effort? That would be terrible,
+because it would help players consume the content much faster, and therefore
+run out of it sooner than expected. If that happens, they will have
 nothing that avoids them to think, and the tremendous agony of realizing
 their own irrelevance would again take over their life.
 
-No, we definitely do not want this to happen, so let's see how to
+No, we definitely do not want that to happen, so let's see how to
 encrypt savegames and protect the world order.
 
 How?
@@ -53,7 +53,7 @@ To create an encrypted file, a passphrase must be provided, like this:
     f.Close();
 
 This will make the file unreadable to users, but will still not prevent
-them sharing save files. To solve this, use the device unique id or
+them from sharing savefiles. To solve this, use the device unique id or
 some unique user identifier, for example:
 
 .. tabs::
@@ -73,11 +73,11 @@ some unique user identifier, for example:
 
 Note that ``OS.get_unique_id()`` only works on iOS and Android.
 
-This is all! Thanks for your cooperation, citizen.
+That is all! Thank you for your cooperation, citizen.
 
 .. note:: This method cannot really prevent players from editing their savegames
-          locally, because since the encryption key is stored inside the game, the player
+          locally because, since the encryption key is stored inside the game, the player
           can still decrypt and edit the file themselves. The only way to prevent this
-          from being possible is to store the save data on a remote server where players
+          from being possible is to store the save data on a remote server, where players
           can only make authorized changes to their save data. If your game deals with
           real money, you need to be doing this anyway.